HELP I/O device error for Micro Sd card!!

Hello there my friend has brought round her 4GB SD card, and ive inserted it into the card reader on my pc, BUT, the folowing error comes up 'The request could nto be performed because of an I/O DISK ERROR". iS THERE any WAY THIS PROBLEM CAN BE sorted please?? Also is the problem with my pc or the memory card please we inserted another SD card and it was ok.

Hi there grey george the other 1 was a 1gb one and it was ok, And guess what, ive just inserted a 4GB SD card for my camera, and my pc wont read that either. Do u think there are any solutions for this please??

Hi grey goerge, my system is a dell 5150 pentium 4, Windows XP service pack 3, purchased it in bought it january 2006, if u can guide me to the right website, that would be appreciated, i've google some webistes but they seem to be asking for money..so not sure if this is right. The external card reader is not working either, but just with the 4gb card only, you help woul be much appreciated

Thanks grey goeorge, i did click on the link, and go to the dell webiste, but once there i didnt know which application to clilck on, as i'm not sure which one relates to my usb drives, or what i actually need to click on to resolve the problem, if u can kindly advice me that would be appreciated.Regardsjules